This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not
contain warnings or cautions to advise non-technical individuals of potencial dangers in attempting to service a product. Products
powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the
product or products deal within this service information by anyone else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked in the
Schematic Diagrams, Circuit Board Diagrams, Explorer Views and Replacement Parts List. It is essential that these
critical parts should be replaced with manufacturer´s specified parts to prevent shock, fire or other hazards. Do not
modify the original design without permission of manufacturer.
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated
or damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, make the following touch current checks to prevent the customer from being exposed to shock hazards.
4. Always ensure cover label TBM4GU113 is correctly replaced before returning to customer (see Fig.1).
Touch-Current Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth
ground such as a water pipe, as shown in Fig. 2.
3. Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential acr oss the measuring network.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measure.
6. The potential at any point (TOUCH CURRENT) expressed as voltage U1 and U2, does not exceed the following values:
For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak);
For d. c.: U1 = 1.0 V,
Note:
The limit value of U2 = 0.35 V (peak) for a. c. and U1 = 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and
2.0 mA d. c.
The limit value U1 = 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100
kHz.
7. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment shoul d
be repaired and rechecked before it is returned to the customer.
COLD
WATER PIPE
(EARTH GROUND)
TO
APPLIANCES
EXPOSED
METAL PARTS
Resistance values in ohms ()
V: Voltmeter or oscilloscope
(r.m.s. or peak reading)
Measuring network for TOUCH CURRENTS
Fig. 1
C
=1500
R
S
R0=500
Input resistance: 1M
Input capacitance:200pF
Frequency range: 15Hz to 1MHz and d.c.respectively
Fig. 2
=0.22F
S
10k
U
(V)
1
0.022F
V
U2 (V)
4
Prevention of Electrostatic Discharge (ESD) to Electrostatically
Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are
called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect
transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of
component damage caused by electrostatic discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on
your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD
wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge build up or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD
protected)" can generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads electrically shorted together by cond uctive foam, aluminum foil
or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective
material to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as th e
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity
(ESD) sufficient to damage an ES device).
There are special components used in this equipment which are important for safety.
These parts are marked by in schematic diagrams, exploded views and replacement parts list. It is essential that
these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire, or other hazards. Do
not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
5
About lead free solder (PbF)
Note: Lead is listed as (Pb) in the periodic table of elements.
In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.
The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).
That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work,
we’d suggest the use of Pb free solder as well, although Pb solder may be used.
PCBs manufactured using lead free solder will have the PbF within a leaf Symbol
stamped on the back of PCB.
Caution
Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40°C)
higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).
Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).
If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before
applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
After applying PbF solder to double layered boards, please check the component side for excess solder which may
flow onto the opposite side. (see Fig.3)
Suggested Pb free solder
There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder.
However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used. (see Fig.4)
Fig.3
Fig.4
Service Navigation
6
Chassis Board Layout
P-BOARD
Board Name Function
A-Board AV Terminal, HDMI,USB, WIFI, Ethernet,Digital Audio Out,CI Slot,
INTEGRATED TUNER A/DVB-T2/T/C, DVB-T2/T/C Dem, Peaks IC_MTK,
P-Board Main Input, Power Supply, LED Driver, KEY Control, Power Switch
K-Board Remote Receiver, Power and Timer LED, C.A.T.S
A-BOARD
K-BOARD
Speaker out, HP, eMMc Memory, DDR SDRAM
Service Hints
7
How to remove the pedestal assembly
How to remove the backcover
Lay the main unit face down. (see Fig.5)
Remove the 4 fixing screws and Pedestal assembly. (see Fig.6)
Remove the 27 fixing screws and the back cover. (see Fig.7)
(2)
(2)
(2)
(2)
(3)
(2)
(2)
(2)
(3)
(3)
Caution: Before removing cover, receiver must be disconnect from mains.
Fig.5
(1)
(1)
Fig.6
(2)
(2) (2)
Fig.7
(1)
(1)
(2)
(2)(2)
(2)
(3)
(2)
(2)
(3)
SCREWS
(1) THE5ZL002N /4pcs/
(2)
SCREWS
(2) THEC1509 /21pcs/
(3) THTD037J /6pcs/
(2)
(2)
(2)
(3)
(2)
Service Hints
8
Preparation of replacement of LCD panel
Remove screws and Metal Bezel out of replacement panel according to specifications bellow.
Unscrew and remove Metal Bezel from LCD panel (see Fig.8,Fig.9)
Note:
Be careful to damage edge of LCD panel by remove of Metal Bezel!
Screws and Metal Bezel not to use for further.
10pcs
5pcs
Front View
5pcs
8pcs
Fig.8
Metal Bezel
LCD panel
Bottom side of
LCD panel
Fig.9
Service Hints
9
Assembly of LCD panel and cabinet assy
Insert and screw cabinet assy to LCD panel in order according to specification bellow. (see Fig.10,Fig.11)
Cabinet Assy
Top side of
LCD panel
LCD panel
Fig.10
10pcs
5pcs
Front View
5pcs
8pcs
NOTE: Be careful to damage edge of LCD Panel by insertion of cabinet assy!
Press on the cabinet assy /back side of LCD/ Panel during screwing!
1 : 4K/60p, Content Type, Deep Colour, x.v.ColourTM
3 : 4K/30p, Content Type, Deep Colour, x.v.ColourTM
TM
12
Audio Output: 20W (10W + 10W)
Headphones: 3.5mm, 8 Impedance
Accessories supplied : Remote Control
2 x R6 Batteries
Dimensions: Width: Height: Depth:
Including TV stand 1,244mm 776mm 364mm
TV set only 1,244mm 723mm 69mm
Mass:
Including TV stand 21.0kg
TV set only 18.0kg
Design and Specifications are subject to change without notice.
Mass and dimensions shown are approximate.
Technical Description
13
Specification of KEY for DTCP-IP, C2MOD, CI Plus, DIMORA, HDCP2.2, Netflix,
Widevine, Freetime, HDCP1.4
General information:
1. eMMc Memory(IC8920) for spare parts has the seed of KEY for each.
2. The final KEY data will be generated by MTK IC (IC8000) when SELF CHECK was done and are stored in both
MTK IC (IC8000) and eMMc (IC8920).
All KEYs are not generated for all models.
The necessary KEY are only generated and stored depend on the feature of models.
Replacement of ICs:
When MTK IC (IC8000) is replaced, eMMc (IC8920) should be also replaced with new one the same time.
When eMMc Memory(IC8920) is replaced, MTK IC (IC8000) is not necessary to be replaced the same time.
After the replacement of IC, SELF CHECK should be done to generate the final KEY data.
Note:
Keys HDCP1.4 (SINK) for MTK and HDCP2.2 (SINK) for MTK HDMI are not displayed in SELF CHECK.
Connect the 4K60Hz with HDCP2.2 compatible equipment to HDMI1/2 for verification of key [HDCP2.2 (SINK)
for MTK HDMI].
Connect the 4K30Hz compatible equipment to HDMI1/2/3 for verification of key [HDCP1.4 (SINK) for MTK HDMI].
How to SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press the MENU button on the remote
control for more than 3 seconds.
TV will be forced to the factory shipment setting after this SELF CHECK.
Model and Keys:
Keys
Model No.
TX-55DX650B Yes Yes Yes Yes Yes Yes Yes Yes Yes
DTCP-IP
for MTK
C2MOD
CI+
for MTK
DIMORA
HDCP2.2
(SINK)
for MTK
Netflix
Widevine
MAC
FREETIME
for MTK
HDCP1.4
(SINK)
for MTK
HDMI
HDCP2.2
(SINK)
for MTK
HDMI
USB HDD Recording:
General information:
Digital TV programmes can be recorded in USB HDD.
C2MOD key generated in A-board by SELF CHECK binds TV and USB-HDD for communication.
That key is only one key for them. If the key is different, TV can not access USB-HDD.
Caution:
New key will be generated by following SELF CHECK and previous TV programmes recorde d in USB HDD will not be
viewed.
SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press the MENU button on the remote control for more
then 3 seconds.
* Connect AC 230V to P1 connector of P-PCB (Main switch is OFF).
** Set main switch is ON.
*** Beware, for testing of PFC use the GND (TP7203) in Hot area of P board – risk of electric shock.
oltage
oltage*
<1V
<1V
oltage**
65V ± 5V
16V ± 0.6V
CS Maintenance Menu
15
MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can
be adjusted by remote control in Service Menu
How to enter into CS Maintenance Menu
Purpose
After exchange parts, check and adjust the contents of adjustment mode.
While pressing [VOLUME ( - )] button on the main unit, press the [RED] button on the remote control for 3 times within
2 seconds.
Note:
Input 2D signal to enter CS Maintenance Menu.
How to exit
Press the [EXIT] button on the remote control.
CS Maintenance Menu
OPT
EDID CLK
DRV CHECK
WB-ADJ
Key Command
Press the ( / / / ) button to step up/down/right/left through the functions and adjustments
Press the OK button to change the adjustment values.
Press the RETURN button for return to the main menu.
OPT
1.Select [OPT] in CS Maintenance Menu.
2.Press [OK] button or Cursor key [Right] on the remote control.
Peaks SW
STBY SW
Outer model ID
Inner model ID
Panel inch size
LSI Package
LSI Release
Model data version
Number of bad block in NAND Flash (dec)
Peaks reboot counter
System crash counter
Emergency (SOS) counter
Peaks NAND Maker ID
Power-On period (A<=100hrs, B<=200hrs, C>200hrs)
Total Power-On time (dec, max is 65535)
Power-On timer (dec, max is 1048575)
Fixed (always)
SOS history (latest)
SOS history (last time)
SOS history (last but one)
SOS history (2
SOS history (1
Self-check _0-never selfcheck
1-production selfcheck by “FF” or USCM
2-user selfcheck by pressing “OK”
Fixed (always)
Panel ID
Peaks EEPROM version
STM EEPROM version
STM ROMCOR version
AJAX_CE version
nd
time after shipping)
st
time after shipping)
Hotel Mode
18
1. Purpose
Restrict a function for hotels.
2. Access command to the Hotel mode setup menu.
In order to display the Hotel mode setup menu,
please enter the following command (within 2 second).
[TV] : Vol.[Down] + [REMOTE] : AV (3 times)
Then, the Hotel mode setup menu is displayed.
Hotel mode
Hotel mode
Initial INPUT
Initial POS
Off
Off
Off
Initial VOL Level
Maximum VOL Level
Button Lock
Remote Lock
Off
100
Off
Off
Private Information
Change
Select
RETURN
Keep
3. To exit the “Hotel mode”:
Switch off the power with the [POWER] button
on the main unit or the [POWER] button
on the remote control or pressing [EXIT] button
on the remote control.
4. Explain the Hotel mode setup menu.
ITEM Function
Hotel Mode Select hotel mode ON/OFF
Initial INPUT Select input signal modes.
Initial POS Select programme number.
Initial VOL Level Adjust the volume when each time power is
Maximum VOL
Level
Button Lock Select local key conditions.
Remote Lock Select remote control key conditions.
Private
Information
Set the input, when each time power is switched on.
Selection:
Off/DVB/AV/HDMI1/HDMI2/HDMI3
*Off: give priority to the last memory. However, Euro
Model is compulsorily set to TV.
Selection:
Off/0 to 99
*Off: give priority to the last memory
switched on.
Selection/Range:
Off/0 to 100
*Off: give priority to the last memory
Adjust maximum volume.
Range:
0 to 100
Selection:
Off/SETUP/MENU
*Off: altogether valid
*Setup: only F-key is invalid
(Tuning guide (menu) can not be selected.)
*MENU: only F-key is invalid
(only Volume/Mute can be selected.)
Selected”
Off/SETUP/MENU/VOD
*Off: altogether valid
*Setup: only Setup menu is invalid
MENU: Picture/Sound/Setup menu are invalid
VOD:NETFLIX service is invalid
Select private information for VIERA Cast is Keep or
Reset if Hotel mode is set to [On] when TV power
on.
Selection :
Keep/Reset
•Keep: private information for VIERA Cast is keep
•Reset: private information for VIERA Cast is reset
Data Copy by USB Memory
19
Purpose
a) Board replacement (Copy the data when exchanging A-board):
When e xchanging A-board, the data in original A-board can be copied to USB Memory and then copy to new A-board.
TV
A-board
(Before exchanging)
Copy to USB Memory
(After exchanging)
Copy back from USB Memory
USB
Following data can be copied.
User setting data
(inc. Hotel mode setting data)
Channel scan data
Adjustment and factory preset data
b) Hotel (Copy the data when installing a number of units in hotel or any facility):
When insta lling a number of units in hotel or any facility, the data in master TV can be copied to USB Memory and the
copy to other TVs.
Master TV
Copy to USB Memory
USB
Memory
Other TV
Copy from USB Memory
Other TV
Other TV
Following data can be copied.
User setting data
(inc. Hotel mode setting data)
Channel scan data
Preparation
Make pwd file as startup file for (a) or (b) in an empty USB Memory.
1. Insert an empty USB Memory to your PC.
2. Right-click a blank area in a USB Memory window, point to New, and then click text document. A new file is created
by default (New Text Document.txt).
3. Right-click the new text document that you just created and select rename, and then change the name and
extension of the file to the following file name (a) or (b) and press ENTER.
File name:
(a) For Board replacement: boardreplace.pwd
(b) For Hotel: hotel.pwd
Note:
Please make only one file to prevent the operation error.
No any other file should be in USB Memory.
Data Copy from TV set to USB Memory
20
1. Turn on the TV set.
2. Insert USB Memory with a startup file (pwd file) to USB Terminal.
On-screen Display will be appeared according to the startu p file automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2770
(b) For Hotel: 4850
Data will be copied from TV set to USB Memory.
It takes around 1 to 2 minutes maximum for copying.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
5. Turn off the TV set.
Note:
Following new folder will be created in USB Memory for data from TV set.
(a) For Board replacement: user_setup
(b) For Hotel: hotel
Data Copy(Board replacement )
Input password
Data copy
(Board replacement) or (Hotel)
-----
Data Copy(Board replacement )
Input password
Input Password
2770 or 4850
-----
Data Copy(Board replacement )
Copy TV to Media
Please wait for a while
Please do not remove the Media
Performing
GETTING
Data Copy(Board replacement )
Performing
Data copy has been successful
Please remove Media
Completion
FINISH
Data Copy from USB Memory to TV set
21
1. Turn on the TV set.
2. Insert USB Memory with Data to USB Terminal.
On-screen Display will be appeared according to the Data folder automaticall y.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2771
(b) For Hotel: 4851
Data will be copied from USB Memory to TV set.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
(a) For Board replacement: Data will be deleted after copying (Limited one copy).
(b) For Hotel: Data will not be deleted and can be used for other TVs.
5. Turn off the TV set.
Note:
1. Depending on the failure of boards, function of Data for board replacement does not work.
2. This function can be effective among the same model numbers.
Data Copy(Board replacement )
Input password
Performing
Input Password
2771 or 4851
-----
Data Copy(Board replacement )
Copy Media to TV
Please wait for a while
Please do not remove the Media
Performing
WRITING
Data Copy(Board replacement )
Performing
Data copy has been successful
Please turn off the TV for system
initializing
FINISH
Option Bytes Description
22
OPTION1
b1 TEXT Ch Refresh ON (1) / OFF (0)
b2 ID-1 ON (1) / OFF (0)
b3 Macrovision Auto-judge ON (1) / OFF (0)
b5 Reserved b6 Enable HDMI force reset ON (1) / OFF (0)
b7 Reserved OPTION2 b0 Adjust Igain enable ON (1) / OFF (0)
b1 A2 BG enable (5.5MHz) ON (1) / OFF (0)
b2 A2 DK1 enable (6.26MHz) ON (1) / OFF (0)
b3 A2 DK3 enable (5.742MHz) ON (1) / OFF (0)
b4 NICAM scan ON (1) / OFF (0)
b5 NICAM BG enable (5.5MHz) ON (1) / OFF (0)
b6 NICAM I enable (6.0MHz) ON (1) / OFF (0)
b7 NICAM DK enable (6.5MHz) ON (1) / OFF (0)
OPTION3 b0 NICAM priority ON (1) / OFF (0)
b1 Reserved -
b2 Reserved -
b3 A2 DK2 enable ON (1) / OFF (0)
b4 Inhibition of countermeasure for SIF signal drop ON (1) / OFF (0)
b5 Get onid from physical CH (CHINA) ON (1) / OFF (0)
b6 SSU search enable for HOTEL model ON (1) / OFF (0)
b7 SASO mute (ASIA) ON (1) / OFF (0)
OPTION4 b0 Countermeasure for Taiwan NTSC noise sound ON (1) / OFF (0)
b2 3DYC color motion detect ON (1) / OFF (0)
b3 RF Clamp Current minimum (TAIWAN) ON (1) / OFF (0)
b4 Reserved -
b5 Reserved -
b6 Reserved -
b7 Enable workaround for Polsat CAM problem (POLAND) ON (1) / OFF (0)
OPTION16 b0 PIP/MW (derivate models) ON (1) / OFF (0)
b2 Digital Remaster sound menu enable (derivate models) ON (1) / OFF (0)
b4 Ambience sound menu enable (derivate models) ON (1) / OFF (0)
b5 Control4 function enable ON (1) / OFF (0)
b6 Reserved -
b7 Reserved -
Self Check
p
23
How to access
Self-check indication only:
While pressing [VOLUME ( - )] button on the main unit, press [BLUE] button on the remote control.
Self-check indication and forced to factory shipment setting:
While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
How to exit
Switch off the power with the [POWER] button on the main unit.
If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".
Power LED blinking timing chart
24
1. Subject
Information of LED Flashing timing chart.
2. Contents
When abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by number of blinking of the Power LED on the front panel of the unit.
Blinking
times
Once
1 BL_SOS
7
Blinking timing Contents Check point
4 sec
Light
No Light
SUB3.3V_SOS
LCD PANEL
P BOARD
A BOARD
P BOARD
9
10
13
SOUND_SOS
FRC_SOS A BOARD
EMERGENCY A BOARD
A BOARD
SPEAKERS
LCD Panel Test Mode
Purpose:
To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displaye d.
How to Enter:
While pressing [VOLUME ( - )] button of the main unit, press [YELLOW] button of the remote control three times.
How to Exit:
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
How to confirm:
If the abnormal picture is displayed, go into LCD Panel test mode to display the several test patterns.
And then, judge by the following method.
Still abnormal picture is displayed: The cause must be in LCD Panel.
Normal picture is displayed: The cause must be in A board.
Remarks:
The test pattern is created by the circuit in LCD Panel.
In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal.
If the normal picture is displayed, LCD Panel must be okay and the cause of failure must be in A board.